What's the impact on "WRITE SAME failed. Manually zeroing"

Solution Verified - Updated -

Issue

  • Each time when we reboot the server, we see the following messages in /var/log/messages. What do they mean and how can we fix this issue?

    Mar 19 07:53:55 serverX kernel: dm-4: WRITE SAME failed. Manually zeroing.
    Mar 19 09:58:36 serverX kernel: dm-4: WRITE SAME failed. Manually zeroing.
    Mar 19 10:00:52 serverX kernel: dm-4: WRITE SAME failed. Manually zeroing.
    
  • Do I need to worry about WRITE SAME failed. Manually zeroing messages in my logs.

  • The logged event WRITE SAME failed. Manually zeroing is causing the system to take a long time to reboot (slow reboot).
  • Getting "WRITE SAME failed. Manually zeroing." in dmesg

Environment

  • Red Hat Enterprise Linux 7 (RHEL)

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